launch.json

{
    "version": "0.2.0",
    "configurations": [
    {
    "name": "g++.exe build and debug active file",
    "type": "cppdbg",
    "request": "launch",
    "program": "E:\\Olymp\\Codeforces\\train1500-1900\\test\\a.exe",
    "args": [],
    "stopAtEntry": false,
    "cwd": "E:\\Olymp\\Codeforces\\train1500-1900\\test",
    "environment": [],
    "externalConsole": true, //set to true to see output in cmd instead
    "MIMode": "gdb",
    "miDebuggerPath": "C:\\MinGW\\bin\\gdb.exe",
    "setupCommands": [
    {
    "description": "Enable pretty-printing for gdb",
    "text": "-enable-pretty-printing",
    "ignoreFailures": true
    }
    ],
    "preLaunchTask": "g++.exe build active file"
    },
    {
    "name": "g++ build & run active file",
    "type": "cppdbg",
    "request": "launch",
    "program": "E:\\Olymp\\Codeforces\\train1500-1900\\test\\a.exe",
    "args": [],
    "stopAtEntry": false,
    "cwd": "E:\\Olymp\\Codeforces\\train1500-1900\\test",
    "environment": [],
    "externalConsole": true, //set to true to see output in cmd instead
    "MIMode": "gdb",
    "miDebuggerPath": "C:\\MinGW\\bin\\gdb.exe",
    "setupCommands": [
    {
    "description": "Enable pretty-printing for gdb",
    "text": "-enable-pretty-printing",
    "ignoreFailures": true
    }
    ],
    "preLaunchTask": "g++ build & run active file"
    }
    ]
}